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It makes a lot more sense to me how inputs can feasibly have no out puts -- as soon as we learned about the workings of the synaptic potential, it made sense.  Understanding that there are just as many inhibitory areas as excitatory areas definitely let me see the world of input/outputs clearer.  There could be a trillion inputs with no output, because there is the inability to sometimes continue the action potentials. 

 Looking at it this way, it makes me think that a lot more of my behavior comes from innerworkings of my brain, rather than my environment.  The impact of creating sensations within the nervous system seems to weigh a lot more, now.